JDK 11 java.naming.jmod - Naming Module
JDK 11 java.naming.jmod is the JMOD file for JDK 11 Naming module.
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⏎ javax/naming/CompositeName.java
/*
* Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package javax.naming;
import java.util.Enumeration;
import java.util.Properties;
/**
* This class represents a composite name -- a sequence of
* component names spanning multiple namespaces.
* Each component is a string name from the namespace of a
* naming system. If the component comes from a hierarchical
* namespace, that component can be further parsed into
* its atomic parts by using the CompoundName class.
*<p>
* The components of a composite name are numbered. The indexes of a
* composite name with N components range from 0 up to, but not including, N.
* This range may be written as [0,N).
* The most significant component is at index 0.
* An empty composite name has no components.
*
* <h1>JNDI Composite Name Syntax</h1>
* JNDI defines a standard string representation for composite names. This
* representation is the concatenation of the components of a composite name
* from left to right using the component separator (a forward
* slash character (/)) to separate each component.
* The JNDI syntax defines the following meta characters:
* <ul>
* <li>escape (backward slash \),
* <li>quote characters (single (') and double quotes (")), and
* <li>component separator (forward slash character (/)).
* </ul>
* Any occurrence of a leading quote, an escape preceding any meta character,
* an escape at the end of a component, or a component separator character
* in an unquoted component must be preceded by an escape character when
* that component is being composed into a composite name string.
* Alternatively, to avoid adding escape characters as described,
* the entire component can be quoted using matching single quotes
* or matching double quotes. A single quote occurring within a double-quoted
* component is not considered a meta character (and need not be escaped),
* and vice versa.
*<p>
* When two composite names are compared, the case of the characters
* is significant.
*<p>
* A leading component separator (the composite name string begins with
* a separator) denotes a leading empty component (a component consisting
* of an empty string).
* A trailing component separator (the composite name string ends with
* a separator) denotes a trailing empty component.
* Adjacent component separators denote an empty component.
*
*<h1>Composite Name Examples</h1>
*This table shows examples of some composite names. Each row shows
*the string form of a composite name and its corresponding structural form
*({@code CompositeName}).
*
<table class="striped"><caption style="display:none">examples showing string
form of composite name and its corresponding structural form (CompositeName)</caption>
<thead>
<tr>
<th scope="col">String Name</th>
<th scope="col">CompositeName</th>
</tr>
</thead>
<tbody style="text-align:left">
<tr>
<th scope="row">
""
</th>
<td>{} (the empty name == new CompositeName("") == new CompositeName())
</td>
</tr>
<tr>
<th scope="row">
"x"
</th>
<td>{"x"}
</td>
</tr>
<tr>
<th scope="row">
"x/y"
</th>
<td>{"x", "y"}</td>
</tr>
<tr>
<th scope="row">"x/"</th>
<td>{"x", ""}</td>
</tr>
<tr>
<th scope="row">"/x"</th>
<td>{"", "x"}</td>
</tr>
<tr>
<th scope="row">"/"</th>
<td>{""}</td>
</tr>
<tr>
<th scope="row">"//"</th>
<td>{"", ""}</td>
</tr>
<tr><th scope="row">"/x/"</th>
<td>{"", "x", ""}</td>
</tr>
<tr><th scope="row">"x//y"</th>
<td>{"x", "", "y"}</td>
</tr>
</tbody>
</table>
*
*<h1>Composition Examples</h1>
* Here are some composition examples. The right column shows composing
* string composite names while the left column shows composing the
* corresponding {@code CompositeName}s. Notice that composing the
* string forms of two composite names simply involves concatenating
* their string forms together.
<table class="striped"><caption style="display:none">composition examples
showing string names and composite names</caption>
<thead>
<tr>
<th scope="col">String Names</th>
<th scope="col">CompositeNames</th>
</tr>
</thead>
<tbody style="text-align:left">
<tr>
<th scope="row">
"x/y" + "/" = x/y/
</th>
<td>
{"x", "y"} + {""} = {"x", "y", ""}
</td>
</tr>
<tr>
<th scope="row">
"" + "x" = "x"
</th>
<td>
{} + {"x"} = {"x"}
</td>
</tr>
<tr>
<th scope="row">
"/" + "x" = "/x"
</th>
<td>
{""} + {"x"} = {"", "x"}
</td>
</tr>
<tr>
<th scope="row">
"x" + "" + "" = "x"
</th>
<td>
{"x"} + {} + {} = {"x"}
</td>
</tr>
</tbody>
</table>
*
*<h1>Multithreaded Access</h1>
* A {@code CompositeName} instance is not synchronized against concurrent
* multithreaded access. Multiple threads trying to access and modify a
* {@code CompositeName} should lock the object.
*
* @author Rosanna Lee
* @author Scott Seligman
* @since 1.3
*/
public class CompositeName implements Name {
private transient NameImpl impl;
/**
* Constructs a new composite name instance using the components
* specified by 'comps'. This protected method is intended
* to be used by subclasses of CompositeName when they override
* methods such as clone(), getPrefix(), getSuffix().
*
* @param comps A non-null enumeration containing the components for the new
* composite name. Each element is of class String.
* The enumeration will be consumed to extract its
* elements.
*/
protected CompositeName(Enumeration<String> comps) {
impl = new NameImpl(null, comps); // null means use default syntax
}
/**
* Constructs a new composite name instance by parsing the string n
* using the composite name syntax (left-to-right, slash separated).
* The composite name syntax is described in detail in the class
* description.
*
* @param n The non-null string to parse.
* @exception InvalidNameException If n has invalid composite name syntax.
*/
public CompositeName(String n) throws InvalidNameException {
impl = new NameImpl(null, n); // null means use default syntax
}
/**
* Constructs a new empty composite name. Such a name returns true
* when <code>isEmpty()</code> is invoked on it.
*/
public CompositeName() {
impl = new NameImpl(null); // null means use default syntax
}
/**
* Generates the string representation of this composite name.
* The string representation consists of enumerating in order
* each component of the composite name and separating
* each component by a forward slash character. Quoting and
* escape characters are applied where necessary according to
* the JNDI syntax, which is described in the class description.
* An empty component is represented by an empty string.
*
* The string representation thus generated can be passed to
* the CompositeName constructor to create a new equivalent
* composite name.
*
* @return A non-null string representation of this composite name.
*/
public String toString() {
return impl.toString();
}
/**
* Determines whether two composite names are equal.
* If obj is null or not a composite name, false is returned.
* Two composite names are equal if each component in one is equal
* to the corresponding component in the other. This implies
* both have the same number of components, and each component's
* equals() test against the corresponding component in the other name
* returns true.
*
* @param obj The possibly null object to compare against.
* @return true if obj is equal to this composite name, false otherwise.
* @see #hashCode
*/
public boolean equals(Object obj) {
return (obj != null &&
obj instanceof CompositeName &&
impl.equals(((CompositeName)obj).impl));
}
/**
* Computes the hash code of this composite name.
* The hash code is the sum of the hash codes of individual components
* of this composite name.
*
* @return An int representing the hash code of this name.
* @see #equals
*/
public int hashCode() {
return impl.hashCode();
}
/**
* Compares this CompositeName with the specified Object for order.
* Returns a
* negative integer, zero, or a positive integer as this Name is less
* than, equal to, or greater than the given Object.
* <p>
* If obj is null or not an instance of CompositeName, ClassCastException
* is thrown.
* <p>
* See equals() for what it means for two composite names to be equal.
* If two composite names are equal, 0 is returned.
* <p>
* Ordering of composite names follows the lexicographical rules for
* string comparison, with the extension that this applies to all
* the components in the composite name. The effect is as if all the
* components were lined up in their specified ordered and the
* lexicographical rules applied over the two line-ups.
* If this composite name is "lexicographically" lesser than obj,
* a negative number is returned.
* If this composite name is "lexicographically" greater than obj,
* a positive number is returned.
* @param obj The non-null object to compare against.
*
* @return a negative integer, zero, or a positive integer as this Name
* is less than, equal to, or greater than the given Object.
* @exception ClassCastException if obj is not a CompositeName.
*/
public int compareTo(Object obj) {
if (!(obj instanceof CompositeName)) {
throw new ClassCastException("Not a CompositeName");
}
return impl.compareTo(((CompositeName)obj).impl);
}
/**
* Generates a copy of this composite name.
* Changes to the components of this composite name won't
* affect the new copy and vice versa.
*
* @return A non-null copy of this composite name.
*/
public Object clone() {
return (new CompositeName(getAll()));
}
/**
* Retrieves the number of components in this composite name.
*
* @return The nonnegative number of components in this composite name.
*/
public int size() {
return (impl.size());
}
/**
* Determines whether this composite name is empty. A composite name
* is empty if it has zero components.
*
* @return true if this composite name is empty, false otherwise.
*/
public boolean isEmpty() {
return (impl.isEmpty());
}
/**
* Retrieves the components of this composite name as an enumeration
* of strings.
* The effects of updates to this composite name on this enumeration
* is undefined.
*
* @return A non-null enumeration of the components of
* this composite name. Each element of the enumeration is of
* class String.
*/
public Enumeration<String> getAll() {
return (impl.getAll());
}
/**
* Retrieves a component of this composite name.
*
* @param posn The 0-based index of the component to retrieve.
* Must be in the range [0,size()).
* @return The non-null component at index posn.
* @exception ArrayIndexOutOfBoundsException if posn is outside the
* specified range.
*/
public String get(int posn) {
return (impl.get(posn));
}
/**
* Creates a composite name whose components consist of a prefix of the
* components in this composite name. Subsequent changes to
* this composite name does not affect the name that is returned.
*
* @param posn The 0-based index of the component at which to stop.
* Must be in the range [0,size()].
* @return A composite name consisting of the components at indexes in
* the range [0,posn).
* @exception ArrayIndexOutOfBoundsException
* If posn is outside the specified range.
*/
public Name getPrefix(int posn) {
Enumeration<String> comps = impl.getPrefix(posn);
return (new CompositeName(comps));
}
/**
* Creates a composite name whose components consist of a suffix of the
* components in this composite name. Subsequent changes to
* this composite name does not affect the name that is returned.
*
* @param posn The 0-based index of the component at which to start.
* Must be in the range [0,size()].
* @return A composite name consisting of the components at indexes in
* the range [posn,size()). If posn is equal to
* size(), an empty composite name is returned.
* @exception ArrayIndexOutOfBoundsException
* If posn is outside the specified range.
*/
public Name getSuffix(int posn) {
Enumeration<String> comps = impl.getSuffix(posn);
return (new CompositeName(comps));
}
/**
* Determines whether a composite name is a prefix of this composite name.
* A composite name 'n' is a prefix if it is equal to
* getPrefix(n.size())--in other words, this composite name
* starts with 'n'. If 'n' is null or not a composite name, false is returned.
*
* @param n The possibly null name to check.
* @return true if n is a CompositeName and
* is a prefix of this composite name, false otherwise.
*/
public boolean startsWith(Name n) {
if (n instanceof CompositeName) {
return (impl.startsWith(n.size(), n.getAll()));
} else {
return false;
}
}
/**
* Determines whether a composite name is a suffix of this composite name.
* A composite name 'n' is a suffix if it is equal to
* getSuffix(size()-n.size())--in other words, this
* composite name ends with 'n'.
* If n is null or not a composite name, false is returned.
*
* @param n The possibly null name to check.
* @return true if n is a CompositeName and
* is a suffix of this composite name, false otherwise.
*/
public boolean endsWith(Name n) {
if (n instanceof CompositeName) {
return (impl.endsWith(n.size(), n.getAll()));
} else {
return false;
}
}
/**
* Adds the components of a composite name -- in order -- to the end of
* this composite name.
*
* @param suffix The non-null components to add.
* @return The updated CompositeName, not a new one. Cannot be null.
* @exception InvalidNameException If suffix is not a composite name.
*/
public Name addAll(Name suffix)
throws InvalidNameException
{
if (suffix instanceof CompositeName) {
impl.addAll(suffix.getAll());
return this;
} else {
throw new InvalidNameException("Not a composite name: " +
suffix.toString());
}
}
/**
* Adds the components of a composite name -- in order -- at a specified
* position within this composite name.
* Components of this composite name at or after the index of the first
* new component are shifted up (away from index 0)
* to accommodate the new components.
*
* @param n The non-null components to add.
* @param posn The index in this name at which to add the new
* components. Must be in the range [0,size()].
* @return The updated CompositeName, not a new one. Cannot be null.
* @exception InvalidNameException If n is not a composite name.
* @exception ArrayIndexOutOfBoundsException
* If posn is outside the specified range.
*/
public Name addAll(int posn, Name n)
throws InvalidNameException
{
if (n instanceof CompositeName) {
impl.addAll(posn, n.getAll());
return this;
} else {
throw new InvalidNameException("Not a composite name: " +
n.toString());
}
}
/**
* Adds a single component to the end of this composite name.
*
* @param comp The non-null component to add.
* @return The updated CompositeName, not a new one. Cannot be null.
* @exception InvalidNameException If adding comp at end of the name
* would violate the name's syntax.
*/
public Name add(String comp) throws InvalidNameException {
impl.add(comp);
return this;
}
/**
* Adds a single component at a specified position within this
* composite name.
* Components of this composite name at or after the index of the new
* component are shifted up by one (away from index 0) to accommodate
* the new component.
*
* @param comp The non-null component to add.
* @param posn The index at which to add the new component.
* Must be in the range [0,size()].
* @return The updated CompositeName, not a new one. Cannot be null.
* @exception ArrayIndexOutOfBoundsException
* If posn is outside the specified range.
* @exception InvalidNameException If adding comp at the specified position
* would violate the name's syntax.
*/
public Name add(int posn, String comp)
throws InvalidNameException
{
impl.add(posn, comp);
return this;
}
/**
* Deletes a component from this composite name.
* The component of this composite name at position 'posn' is removed,
* and components at indices greater than 'posn'
* are shifted down (towards index 0) by one.
*
* @param posn The index of the component to delete.
* Must be in the range [0,size()).
* @return The component removed (a String).
* @exception ArrayIndexOutOfBoundsException
* If posn is outside the specified range (includes case where
* composite name is empty).
* @exception InvalidNameException If deleting the component
* would violate the name's syntax.
*/
public Object remove(int posn) throws InvalidNameException{
return impl.remove(posn);
}
/**
* Overridden to avoid implementation dependency.
* @serialData The number of components (an {@code int}) followed by
* the individual components (each a {@code String}).
*/
private void writeObject(java.io.ObjectOutputStream s)
throws java.io.IOException {
s.writeInt(size());
Enumeration<String> comps = getAll();
while (comps.hasMoreElements()) {
s.writeObject(comps.nextElement());
}
}
/**
* Overridden to avoid implementation dependency.
*/
private void readObject(java.io.ObjectInputStream s)
throws java.io.IOException, ClassNotFoundException {
impl = new NameImpl(null); // null means use default syntax
int n = s.readInt(); // number of components
try {
while (--n >= 0) {
add((String)s.readObject());
}
} catch (InvalidNameException e) {
throw (new java.io.StreamCorruptedException("Invalid name"));
}
}
/**
* Use serialVersionUID from JNDI 1.1.1 for interoperability
*/
private static final long serialVersionUID = 1667768148915813118L;
/*
// %%% Test code for serialization.
public static void main(String[] args) throws Exception {
CompositeName c = new CompositeName("aaa/bbb");
java.io.FileOutputStream f1 = new java.io.FileOutputStream("/tmp/ser");
java.io.ObjectOutputStream s1 = new java.io.ObjectOutputStream(f1);
s1.writeObject(c);
s1.close();
java.io.FileInputStream f2 = new java.io.FileInputStream("/tmp/ser");
java.io.ObjectInputStream s2 = new java.io.ObjectInputStream(f2);
c = (CompositeName)s2.readObject();
System.out.println("Size: " + c.size());
System.out.println("Size: " + c.snit);
}
*/
/*
%%% Testing code
public static void main(String[] args) {
try {
for (int i = 0; i < args.length; i++) {
Name name;
Enumeration e;
System.out.println("Given name: " + args[i]);
name = new CompositeName(args[i]);
e = name.getComponents();
while (e.hasMoreElements()) {
System.out.println("Element: " + e.nextElement());
}
System.out.println("Constructed name: " + name.toString());
}
} catch (Exception ne) {
ne.printStackTrace();
}
}
*/
}
⏎ javax/naming/CompositeName.java
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